Installation
Your choice of drainage will depend on the structure of the roof.
£9.02 ex VAT per m2
The drainage layer has an important role to play in the total system structure of a green roof. It stores water and allows excess water to drain away. During dry periods, the stored water can be reabsorbed by the vegetation layer above and the drainage contributes to the aeration of the plant roots.
Your choice of drainage will depend on the structure of the roof.